package com.nowcoder.nowcodercommunity.controller;

import com.nowcoder.nowcodercommunity.annotation.LoginRequired;
import com.nowcoder.nowcodercommunity.entity.User;
import com.nowcoder.nowcodercommunity.service.FollowService;
import com.nowcoder.nowcodercommunity.service.LikeService;
import com.nowcoder.nowcodercommunity.service.UserService;
import com.nowcoder.nowcodercommunity.util.CommunityConstant;
import com.nowcoder.nowcodercommunity.util.CommunityUtil;
import com.nowcoder.nowcodercommunity.util.HostHolder;
import com.qiniu.util.Auth;
import com.qiniu.util.StringMap;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Map;

@Controller
@RequestMapping("/user")
public class UserController implements CommunityConstant {

    private static final Logger logger= LoggerFactory.getLogger(UserController.class);

    @Autowired
    private UserService userService;

    @Autowired
    private FollowService followService;

    @Autowired
    private LikeService likeService;

    @Value("${community.path.upload}")
    private String uploadPath;

    @Value("${community.path.domain}")
    private String domain;

    @Value("${server.servlet.context-path}")
    private String contextPath;

    @Autowired
    private HostHolder hostHolder;

    @Value("${qiniu.key.access}")
    private String accessKey;

    @Value("${qiniu.key.secret}")
    private String secretKey;

    @Value("${qiniu.bucket.header.name}")
    private String headerBucketName;

    @Value("${qiniu.bucket.header.url}")
    private String headerBucketUrl;

    @RequestMapping(path = "/setting",method = RequestMethod.GET)
    @LoginRequired
    public String getSettingPage(Model model){
        // 生成上传文件名称
        String fileName=CommunityUtil.generateUUID();
        // 设置响应信息
        StringMap policy=new StringMap();
        policy.put("returnBody",CommunityUtil.getJSONString(0));
        // 生成上传凭证
        Auth auth= Auth.create(accessKey,secretKey);
        String uploadToken=auth.uploadToken(headerBucketName,fileName,3600,policy);

        model.addAttribute("uploadToken",uploadToken);
        model.addAttribute("fileName",fileName);

        return "/site/setting";
    }

    // 更新头像的路径
    @RequestMapping(path = "/header/url",method = RequestMethod.POST)
    @ResponseBody
    public String updateHeaderUrl(String fileName){
        if(StringUtils.isBlank(fileName)){
            return CommunityUtil.getJSONString(1,"文件名不能为空！");
        }
        String url=headerBucketUrl+"/"+fileName;
        userService.updateHeader(hostHolder.getUser().getId(),url);
        return CommunityUtil.getJSONString(0);
    }

    // 废弃
    @LoginRequired
    @RequestMapping(path = "/upload",method = RequestMethod.POST)
    public String uploadHeader(MultipartFile headerImage, Model model){
        if(headerImage == null){
            model.addAttribute("error","您还没有选择图片！");
            return "/site/setting";
        }

        String fileName=headerImage.getOriginalFilename();
        String suffix=fileName.substring(fileName.lastIndexOf("."));
        if(StringUtils.isBlank(suffix)){
            model.addAttribute("error","您还没有选择图片！");
            return "/site/setting";
        }
        //生成随机文件名
        fileName=CommunityUtil.generateUUID()+suffix;
        //确定文件存放路径
        File dest=new File(uploadPath+"/"+fileName);
        try {
            //存储文件
            headerImage.transferTo(dest);
        } catch (IOException e) {
            logger.error("上传文件失败："+e.getMessage());
            throw new RuntimeException("上传文件失败,服务器发生异常！",e);
        }
        //更新当前用户头像的路径(web访问路径)
        //localhost:8080/community/user/header/xxx.png
        User user=hostHolder.getUser();
        String headerUrl=domain+contextPath+"/user/header/"+fileName;
        userService.updateHeader(user.getId(),headerUrl);

        return "redirect:/index";
    }

    // 废弃
    @RequestMapping(path = "/header/{fileName}",method = RequestMethod.GET)
    public void getHeader(@PathVariable("fileName") String fileName, HttpServletResponse response){
        // 服务器存放路径
        fileName=uploadPath+"/"+fileName;
        // 文件的后缀
        String suffix=fileName.substring(fileName.lastIndexOf("."));
        //响应图片
        response.setContentType("image/"+suffix);
        try(FileInputStream fis=new FileInputStream(fileName);
            OutputStream os=response.getOutputStream();
                ) {

            byte[] buffer=new byte[1024];
            int b=0;
            while ((b=fis.read(buffer)) != -1){
                os.write(buffer,0,b);
            }
        } catch (IOException e) {
            logger.error("读取头像失败："+e.getMessage());
        }

    }

    @RequestMapping(path = "/updatePassword",method = RequestMethod.POST)
    @LoginRequired
    public String updatePassword(String oldPassword,String newPassword,String newPasswordCopy,Model model){
        User user=hostHolder.getUser();
        Map<String,Object> map=userService.updatePassword(user,oldPassword,newPassword,newPasswordCopy);

        if (!map.isEmpty()){
            if(map.containsKey("oldPasswordMsg")){
                model.addAttribute("oldPasswordMsg",map.get("oldPasswordMsg"));
                return "/site/setting";
            }
            if(map.containsKey("newPasswordMsg")){
                model.addAttribute("newPasswordMsg",map.get("newPasswordMsg"));
                return "/site/setting";
            }
            if(map.containsKey("newPasswordCopyMsg")){
                model.addAttribute("newPasswordCopyMsg",map.get("newPasswordCopyMsg"));
                return "/site/setting";
            }

        }else{
            return "redirect:/index";
        }

        return "redirect:/index";
    }

    // 个人主页
    @RequestMapping(path = "/profile/{userId}",method = RequestMethod.GET)
    public String getProfilePage(@PathVariable("userId") int userId,Model model){
        User user=userService.findUserById(userId);
        if( user == null){
            throw new RuntimeException("该用户不存在！");
        }

        // 用户
        model.addAttribute("user",user);
        // 获的赞的数量
        int likeCount=likeService.findUserLikeCount(userId);
        model.addAttribute("likeCount",likeCount);

        // 关注数量
        long followeeCount=followService.findFolloweeCount(userId,ENTITY_TYPE_USER);
        model.addAttribute("followeeCount",followeeCount);
        // 粉丝数量
        long followerCount=followService.findFollowerCount(ENTITY_TYPE_USER,userId);
        model.addAttribute("followerCount",followerCount);
        // 是否已关注
        boolean hasFollowed=false;
        if (hostHolder.getUser() != null){
            hasFollowed=followService.hasFollowed(hostHolder.getUser().getId(),ENTITY_TYPE_USER,userId);
        }
        model.addAttribute("hasFollowed",hasFollowed);

        return "/site/profile";

    }

}
